• Title, Summary, Keyword: Holstein Cows

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Feeding of Sugar Cane Silage to Dairy Cattle during the Dry Season

  • Suksombat, Wisitiporn;Junpanichcharoen, P.
    • Asian-Australasian Journal of Animal Sciences
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    • v.18 no.8
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    • pp.1125-1129
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    • 2005
  • A study was conducted to determine the effect of feeding sugar cane silage compared to chopped whole sugar cane or grass silage on performances of lactating dairy cows during the dry season. Twenty four Holstein Friesian crossbred (>87.5% Holstein Friesian) lactating dairy cows in mid lactation; averaging 15.4${\pm}$3.2 kg of milk, 120${\pm}$23 days in milk, 50.5${\pm}$6.5 months old and 432${\pm}$39 kg live weight, were stratified for milk yield, days in milk, age, stage of lactation and body weight, and then randomly allocated to three treatment groups (8 cows in each group). All cows were fed 7.5 kg/d commercial concentrate plus ad libitum roughage according to treatment groups, which were grass silage, sugar cane silage or chopped whole sugar cane respectively. All cows consumed similar DM and produced similar milk and milk composition yields. However, cows on grass silage lost more weight than the other cows. The present study indicated that, during the dry season, sugar cane silage can be fed to lactating dairy cows, while giving similar milk yield to grass silage or chopped whole sugar cane.

Effect of Rumen-protected Choline Addition on Milk Performance and Blood Metabolic Parameters in Transition Dairy Cows

  • Xu, Guozhong;Ye, Jun'An;Liu, Jianxin;Yu, Yueying
    • Asian-Australasian Journal of Animal Sciences
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    • v.19 no.3
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    • pp.390-395
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    • 2006
  • This work was conducted to study the effect of rumen-protected choline (RPC) addition on milk performance and blood metabolic parameters in transition dairy cows. In Experiment 1, fourteen Chinese Holstein dairy cows were supplemented with 0 or 20 g/d of RPC from 7 d before expected calving to 21 d post partum. Feeding of RPC tended to increase milk yield and milk protein percentage, while milk fat and lactose percentage were not changed. Plasma concentrations of glucose tended to increase as cows consumed RPC, while plasma concentrations of triglycerides, very low density lipoproteins, cholesterol and nonesterified fatty acids were not significantly different between the two groups. In Experiment 2, thirty-six Chinese Holstein dairy cows were supplemented with 0, 30, 60 or 90 g/d RPC from 15 d before expected calving to 15 d post partum. Feeding of RPC tended to increase yield of milk and 4% fat-corrected milk for all the lactating cows, and milk composition was similar among the four groups. Plasma concentrations of glucose were remained at a higher level in 30 or 60 g/d RPC-supplemented groups, and nonesterified fatty acids were decreased in the 30 g/d group. Concentrations of triglycerides tended to reduce in 30 and 90 g/d RPC-supplemented animals, and cholesterol was reduced in 0 or 30 g/d group. These results suggest that RPC addition tended to increase milk yield and improve blood metabolic parameters during transition dairy cows, and feeding 30 g/d of RPC may be the optimal.

The effect of lactation number, stage, length, and milking frequency on milk yield in Korean Holstein dairy cows using automatic milking system

  • Vijayakumar, Mayakrishnan;Park, Ji Hoo;Ki, Kwang Seok;Lim, Dong Hyun;Kim, Sang Bum;Park, Seong Min;Jeong, Ha Yeon;Park, Beom Young;Kim, Tae Il
    • Asian-Australasian Journal of Animal Sciences
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    • v.30 no.8
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    • pp.1093-1098
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    • 2017
  • Objective: The aim of the current study was to describe the relationship between milk yield and lactation number, stage, length and milking frequency in Korean Holstein dairy cows using an automatic milking system (AMS). Methods: The original data set consisted of observations from April to October 2016 of 780 Holstein cows, with a total of 10,751 milkings. Each time a cow was milked by an AMS during the 24 h, the AMS management system recorded identification numbers of the AMS unit, the cow being milking, date and time of the milking, and milk yield (kg) as measured by the milk meters installed on each AMS unit, date and time of the lactation, lactation stage, milking frequency (NoM). Lactation stage is defined as the number of days milking per cows per lactation. Milk yield was calculated per udder quarter in the AMS and was added to 1 record per cow and trait for each milking. Milking frequency was measured the number of milkings per cow per 24 hour. Results: From the study results, a significant relationship was found between the milk yield and lactation number (p<0.001), with the maximum milk yield occurring in the third lactation cows. We recorded the highest milk yield, in a greater lactation length period of early stage (55 to 90 days) at a $4{\times}$ milking frequency/d, and the lowest milk yield was observed in the later stage (>201 days) of cows. Also, milking frequency had a significant influence on milk yield (p<0.001) in Korean Holstein cows using AMS. Conclusion: Detailed knowledge of these factors such as lactation number, stage, length, and milking frequency associated with increasing milk yield using AMS will help guide future recommendations to producers for maximizing milk yield in Korean Dairy industries.

Relationship between Estrous Expression Rate, BCS and Transferable Embryos in Holstein Donor Cows

  • Son, Jun-Kyu;Jung, Yeon-Sub;Cho, Sang-Rae;Baek, Kwang-Soo;Yoon, Ho-Beak;Lim, Hyun-Joo;Kwon, Eung-Gi;Kim, Sang-Bum;Choe, Changyong
    • Journal of Embryo Transfer
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    • v.27 no.4
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    • pp.237-243
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    • 2012
  • This research was investigated the relationship between the number of the transferable embryos and estrus expression rate, BCS (Body Condition Score), which affect the nutritional state of the cow, in Holstein donor cows. CIDRs were inserted into the vaginas of twenty two head of Holstein cows, regardless of estrous cycle. Superovulation was induced using folliclar stimulating hormone (FSH). For artificial insemination, donor cows were injected with $PGF_{2{\alpha}}$ and estrus was checked about 48 hours after the injection. Then they were treated with 4 straws of semen 3 times, with 12-hour intervals. Embryos were collected by a non-surgical method 7 days after the first artificial insemination. When BCS was $$\leq_-$$2.5, the total number of collected ova was 7.3 + 1.9, which is significantly lower (p<0.05) than the numbers 15.4 + 2.8 and 15.4 + 2.1 that were obtained when BCSs were 2.75 and $$\geq_-$$3.0, respectively. Whereas the numbers of transferable embryos were 5.2 + 1.4 when BCS was $$\leq_-$$2.5, which was smaller than the numbers 6.0 + 2.1 and 8.5 + 1.8 that were obtained when BCSs were 2.75 and $$\geq_-$$3.0, respectively; however, the differences were not significant. As for estrus induction rate, the cow groups whose BCSs were 2.75 and $$\geq_-$$3.0 showed 100.0% and 95.0%, respectively. Whereas the cow group whose BCS was $$\leq_-$$2.5 showed 57.1%, and the differences were significant (p< 0.05). As for estrous expression rate, the cow groups whose BCSs were $$\leq_-$$2.5, 2.75 and $$\geq_-$$3.0 showed 100.0%, 100.0% and 85.7%, respectively; however, the differences were not significant. According to the result of this research, it is considered that the total number of collected ova and the number of transferable embryos will be affected by the nutritional state before and after in vivo embryo production and superovulation treatment, and that although the mechanism is not clear, poor stockbreeding management and nutritional level would cause the decrease of ovum recovery rate and the number of transferable embryos in high-producing cows. On the other hand, diverse researches on the superovulation treatment method that is suitable for high-producing Holstein donor cows would contribute to preventing ovarian cyclicity disorder, as well as to the early multiplication of cows with superior genes by increasing the utilization value of donor cows.

The Effect Time of Feeding on Time of Parturition in Holstein Cows (Holstein 에 있어서 분만시간에 대한 사료급여 시간의 영향)

  • 임석기;이상영;전기준;임영철;강수원;윤상기
    • Korean Journal of Animal Reproduction
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    • v.22 no.4
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    • pp.303-306
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    • 1998
  • This study was carried out to investigate the effect of time of feeding to pregnant holstein cows on calving time during a day. The investigation revealed that feeding at 18:00∼04:30 resulted in 87.8%(9+15h) and 80.7% (12+12h) of the cows calving, whereas the traditional 08:00 and 18:00 feeding resulted in 57.9%(9+15h) and 51.8%(12+12h) of them calving during the day period(p<0.001). Especially, between 06:00∼11:00 and 16:00∼17:00, 38.5% and 19.6% of cows calving during the day period were investigated.

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Effect of GnRH or Estradiol on Emergence of a New Follicular Wave, Follicular Development and Pregnancy Rate in a CIDR-Based Timed Al Protocol in Holstein Cows

  • Kim, Ui-Hyung;Nam, Hyun-Wok;Kang, Hyun-Gu;Kim, Ill-Hwa
    • Proceedings of the Korean Society of Developmental Biology Conference
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    • pp.125-125
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    • 2003
  • The objective of this study was to evaluate the effect of GnRH or estradiol in a CIDR-based timed Al (TAI) protocol on follicular turnover, synchronized ovulation and pregnancy rates in Holstein cows. Cows were treated at random stages of the estrus cycle with an insertion of an intravigal progesterone (1.9 g) device (CIDR, Day 0) and either no other treatment (control group; n=10), injection of 100 ug fertirelin acetate (GnRH group; n=10) or 4 mg estradiol benzoate (estradiol group; n=10). Seven days later devices were removed and an injection of 25 mg $PGF_{2$\alpha$}$ was administered. On Day 9, 100 ug GnRH was administered. Cows received a fixed-time insemination 16 h after injection of the GnRH. (중략)

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Study on the Relationship between Udder and Teat Characteristics and Somatic Cell Count (유방과 유두의 형태와 체세포수에 대한 연구)

  • Lee, Jeong-Chi;Lee, Chai-Yong
    • Journal of Veterinary Clinics
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    • v.24 no.2
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    • pp.172-176
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    • 2007
  • The objective of this study was to determine the relationship between udder and teat characteristics and somatic cell count (SCC). A total of 749 (73.1%) milk samples from 1,024 quarters of 259 Holstein cows contained less than 200,000 somatic cells/ml, while 132 (12.9%) quarters contained more than 500,000 somatic cells/ml. Prior to data analysis, somatic cell counts were transformed to natural logarithm. The mean SCS {$log_e(SCS/10^3)$} of milk samples from the front quarters was lower than milk samples from the rear quarters. The highest SCS was observed from cows with the step-shaped udder and the pear-shaped teats, respectively. Increased SCS was observed from cows with large teat diameter, short teat length, short distance between the teat tip to floor (p<0.05) and with increase in parity, respectively.

Responses of Holstein Cows to Different Bovine Somatotropin (bST) Treatments during the Transition Period and Early Lactation

  • Gulay, M.S.;Garcia, A.N.;Hayen, M.J.;Wilcox, C.J.;Head, H.H.
    • Asian-Australasian Journal of Animal Sciences
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    • v.17 no.6
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    • pp.784-793
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    • 2004
  • Major objective was to evaluate three doses of bST (POSILAC(R)) injected into Holstein cows during the transition period and through 56 d of lactation for potential to improve DMI, BCS, BW, metabolites, hormones, IGF-I and milk production. Biweekly injections of bST (0, 5.1, 10.2, or 15.3 mg bST/d) began 28 d before expected parturition and continued through 56 d postpartum. Twenty-three of the 25 multiparous Holstein cows assigned randomly to four groups completed experiment (7, 5, 6 and 5 cows/group, respectively). The DMI, BW and BCS were recorded weekly throughout the prepartum and postpartum periods and blood samples were collected thrice weekly for analyses of ST, insulin, $T_{4}$, $T_{3}$, IGF-I, glucose and NEFA. Milk yields were recorded daily through 60 d postpartum and milk components measured once weekly. Mathematical model for data analyses for prepartum and postpartum periods included treatment, calving month, and the two-factor interaction. Cows injected with 10.2 and 15.3 mg bST prepartum had greater mean prepartum concentrations of ST and IGF-I. Prepartum injections of bST did not affect prepartum BW or BCS. On average, cows injected postpartum better maintained their BCS during first 60 d of lactation (3.15$\pm$0.06, 3.12$\pm$0.007, 3.20$\pm$0.006 and 3.58$\pm$0.009). Treatments did not affect mean prepartum DMI but cows injected with 15.3 mg bST/d had greatest DMI and greatest mean daily MY during the first 3 wk and tended to be greater during first 60 d of lactation. Cows injected with two highest bST doses (10.1 and 15.2 mg/d) had greater mean postpartum concentrations of ST and $T_{3}$, but IGF-I, $T_{4}$, glucose and NEFA did not differ across groups. No adverse effects of bST treatment were observed.

Effects of Prostaglandin $F_{2\alpha}(PGF _{2\alpha})$ on Estrous Cycle and Fertility in Holstein Cows. (유우의 성주기 및 수태율에 미치는 Prostaglandin $F_{2\alpha}$의 영향에 관한 연구)

  • Kim Kyo Joon;Kim Sang Keun
    • Journal of the korean veterinary medical association
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    • v.17 no.3
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    • pp.32-35
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    • 1981
  • These experiments were carried out to define the effects of prostaglandin $F _{2\alpha}(PGF _{2\alpha})$ on estrous cycle and fertility in Holstein cows. Five mg of $PGF _{2\alpha}$ dissolved in l.0ml physiologic saline was given int

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Clinical Use of Xylazine Epidural Anesthesia in Holstein Cows (소에서 Xylazine에 의한 경막외마취의 임상응용)

  • Chang Kwang-Ho;Cheong Jong-Tae;Nam Tchi-Chou
    • Journal of the korean veterinary medical association
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    • v.27 no.11
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    • pp.675-677
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    • 1991
  • This study was designed to examine the effect of xylazine (0.07mg/kg suspended in 5ml saline) given into the epidural space in 11 Holstein cows. Analgesic state was induced at the perineal region within 10 min after administration of xylazine and at the u

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