scholarly journals Production and calving traits of Montbéliarde × Holstein and Viking Red × Holstein cows compared with pure Holstein cows during first lactation in 8 commercial dairy herds

2017 ◽  
Vol 100 (5) ◽  
pp. 4139-4149 ◽  
Author(s):  
A.R. Hazel ◽  
B.J. Heins ◽  
L.B. Hansen
Keyword(s):  
Holstein Cows ◽  
Dairy Herds ◽  
Calving Traits

USE OF MILK RECORDS IN ONE HERD TO PREDICT A COW’S PRODUCTION IN A SECOND HERD

1976 ◽  
Vol 56 (2) ◽  
pp. 187-191 ◽  
Author(s):  
E. B. BURNSIDE ◽  
M. G. FREEMAN ◽  
T. R. BATRA ◽  
G. B. WEAVER
Keyword(s):  
Weighted Regression ◽  
Holstein Cows ◽  
Dairy Herds ◽  
Productive Life ◽  
Ability Estimates ◽  
Future Production ◽  
Class Average ◽  
Days Open

The objective was to relate the average herdmate milk deviation of cows which completed one or more records in each of two Canadian dairy herds. Record of Performance records of Canadian Holstein cows transferred at least once during their productive life were studied to evaluate the use of milk records in one herd to predict a cow’s production in a second herd. Each record was adjusted for days open and age-at-calving and then expressed as a deviation from first lactation or second and later lactation herdmate averages. Weighted regression of the cow’s average herdmate deviation in the second herd on her real producing ability estimated in the first herd was 0.87 ±.07 Breed Class Average (BCA). Weighted regression of the cow’s average BCA in the second herd on her real producing ability estimated from absolute BCA’s was much lower (0.30 ±.05). Approximately 80% of the cows ranked similarly on deviations in the second herd as they did in the first herd. A study of cows transferred from low to high producing herds revealed that real producing ability estimates based on herdmate deviations were excellent indicators of future production (b = 0.98 ±.15). The regression for cows transferred from high to low producing herds was lower (b = 0.44 ±.17).

scholarly journals Effect of Age at First Calving on First Lactation Milk Yield in Holstein Cows from Costa Rican Specialized Dairy Herds

2014 ◽  
Vol 04 (09) ◽  
pp. 197-203
Author(s):  
Mauren Salazar-Carranza ◽  
Gloriana Castillo-Badilla ◽  
Jaime Murillo-Herrera ◽  
Frank Hueckmann-Voss ◽  
Juan José Romero-Zúñiga
Keyword(s):  
Milk Yield ◽  
Costa Rican ◽  
Holstein Cows ◽  
Dairy Herds ◽  
Age At First Calving ◽  
Effect Of Age

scholarly journals Impact of frequency of milking on milk yield and fertility of Holstein cows undergoing extended lactations due to failure to conceive

2021 ◽  
pp. 113
Author(s):  
Jesús Mellado ◽  
Jessica Flores ◽  
Francisco G. Véliz ◽  
Ángeles de Santiago ◽  
José E. García ◽  
...  
Keyword(s):  
Observational Study ◽  
Milk Production ◽  
Milk Yield ◽  
Reproductive Performance ◽  
The Other ◽  
Holstein Cows ◽  
Dairy Herds ◽  
Northern Mexico ◽  
Total Milk ◽  
Services Per Pregnancy

The objective of this observational study was to determine the effect of two (2x) compared to three (3x) times a day milking in Holstein cows undergoing lactations ≥600 d on milk production and reproductive performance. Two large adjacent commercial dairy herds with similar size, facilities, and management in a hot area of northern Mexico (25° N) were used. Cows in one herd (n= 214) were milked two times a day (2x), the other herd was milked three times a day (3x; n=245) and both groups were milked for at least 600 days. For cows in first lactation, total milk yield did not differ between 3x and 2x cows (19796 ± 3354 vs. 19269 ± 3652 kg; p > 0.10) in lactations with an average of 696 and 650 days in milk (DIM), respectively. Multiparous 3x cows produced more total milk days than 2x cows (20942 ± 3920 vs. 18910 ± 2632 kg; p < 0.01) with greater (p < 0.01) DIM for 3x (685 ± 117 days) than 2x (631 ± 88 days) cows. Lactation persistence was greater (p < 0.05) in 2x (62 ± 9%) than 3x (60 ± 10%) cows. Overall conception rate (CR) did not differ between 2x and 3x cows (53.3% vs. 49.8%) but 3x cows required one more service (p < 0.01) to get pregnant than 2x animals.  Given that average milk yield throughout the complete lactation did not differ between 2x (29.8 ± 2.0 kg) and 3x (29.3 ± 2.9 kg) cows, it was concluded that two-times-a-day milking is equally effective as three-times-a-day milking to attain acceptable milk yield in lactations over 600 days. However, reproductive performance based on first-service CR and services per pregnancy was negatively affected by three-times-a-day milking.

21 RELATIONSHIP BETWEEN DURATION OF ESTRUS BEHAVIOR DETERMINED BY RADIOTELEMETORY SYSTEM AND THREE FACTORS (MILK PRODUCTION, STEROID HORMONE, AND OVULATION TIME) IN DAIRY COWS

2007 ◽  
Vol 19 (1) ◽  
pp. 129 ◽  
Author(s):  
H. Yoshioka ◽  
H. Matsuda ◽  
K. Sasaguri ◽  
M. Yonai
Keyword(s):  
Dairy Cows ◽  
Steroid Hormones ◽  
Milk Production ◽  
Steroid Hormone ◽  
Low Fertility ◽  
Holstein Cows ◽  
Dairy Herds ◽  
The Past ◽  
Walking Activity ◽  
The Individual

Many studies have reported on the low fertility of dairy herds during the past several years. The object of this study was to investigate the relationships between duration of estrus and various factors (milk production, peripheral steroid hormones, and period from estrus to ovulation). All primiparous and multiparous Holstein cows (n = 62) were fitted pedometers (Gyuho; Comtec, Miyazaki, Japan) that measure total counts of walking activity per hour and send the individual cow

15 Effects of Timed Artificial Insemination Protocol Using Prostglandin F2α and Estradiol Benzoate on Conception Rate in High-Producing Dairy Cows

2018 ◽  
Vol 30 (1) ◽  
pp. 147
Author(s):  
M. Yamaguchi ◽  
M. Takayama ◽  
H. López
Keyword(s):  
Reproductive Performance ◽  
Prostaglandin F2α ◽  
Estradiol Benzoate ◽  
Conception Rate ◽  
Holstein Cows ◽  
Dairy Herds ◽  
Chi Square ◽  
Parity Number ◽  
Chi Square Test ◽  
Synchronization Protocol

For several years, milk production per Holstein cow has been increasing while reproductive performance has declined worldwide. Timed AI (TAI) protocols with synchronization of oestrus and ovulation are tools for the improvement of reproductive performance in high producing dairy herds. In protocols for synchronization of oestrus and ovulation, oestradiol benzoate (EB) has been used to increase the number of animals that show oestrous behaviour, synchronize ovulation, and improve conception rate (CR). The objective of this study was to compare a simple oestrus synchronization and TAI protocol using prostaglandin F2α (PG) and EB with a more complicated TAI protocol or oestrus detection and AI on CR in high-producing Holstein cows. The study was conducted from 2014 to 2016, using 1,036 Holstein cows from 3 commercial dairy herds in central Hokkaido, Japan. The average parity number was 2.6 ± 1.5, and days open averaged 152.2 ± 82.0 days. The average milk yield (305 days) was 11,348 ± 1,619 kg. Oestrus synchronization of cows was achieved using PG followed by EB and TAI (PG was given to cows with a cutoff for CL diameter of >20 mm by ultrasonography; EB (1 mg) was administered 24 h later and AI was carried out 24 to 48 h after EB injection), or by Heatsynch + CIDR [gonadotropin-releasing hormone (GnRH) injection and CIDR insertion at random stages of the oestrous cycle, CIDR removal, and PG injection 7 days later, EB injected 24 h after CIDR removal, and TAI 24 to 32 h after EB injection]. Cows observed in natural oestrus were used as controls. All cows were inseminated after the onset of standing heat or removal of the tail chalk (Paintstik®, LA-CO Industries, Elk Grove Village, IL, USA). Pregnancy diagnoses were performed using ultrasonography between 30 and 45 days after AI. The CR were compared using chi-square test. The CR (no. of pregnant cows/no. of total cows in the treatment group) of the natural oestrus group, PG + EB, and Heatsynch + CIDR cows were 39.2% (302/771), 38.7% (48/124), and 31.2% (44/141), respectively. Overall CR for the 3 groups was 38.0%. There were no significant differences in CR among the 2 groups (P > 0.07). These results show that a simple oestrus synchronization protocol with injection of PG followed by EB can be used effectively for high-producing dairy herds, yielding a satisfactory CR similar to that obtained with the Heatsynch + CIDR protocol or natural oestrus.

scholarly journals Relationships between the incidence of health disorders and the reproduction traits of Holstein cows in the Czech Republic

2008 ◽  
Vol 52 (No. 8) ◽  
pp. 227-235 ◽  
Author(s):  
M. Vacek ◽  
L. Stádník ◽  
M. Štípková
Keyword(s):  
Clinical Mastitis ◽  
Holstein Cows ◽  
Dairy Herds ◽  
The Czech Republic ◽  
Yield Level ◽  
Milk Fever ◽  
Reproduction Traits ◽  
Foetal Membranes ◽  
Fertility Disorders ◽  
Health Disorders

The objective of this study was to evaluate the relationships between several health disorders: milk fever (MF; hypocalcaemia and parturient paresis), retained placenta (RP; retained foetal membranes), metritis (ME; endometritis and pyometra), ovarian cysts (OC; follicular and luteal cysts), clinical mastitis (CM), and lameness (LS; foot and leg problems) as affecting the reproductive performance of dairy cows. The dataset of 1 432 Holstein cows calving between January 2000 and April 2004 from 4 commercial dairy herds was analyzed by the linear regression model which included the effects of herd-year-season of calving, parity, FCM yield level, incidences of studied fertility and health disorders, and regression on the first calving age within parity. It was proved that fertility disorders relating to parturition, such as RP and ME, had a significant influence (<i>P</i> < 0.01 to <i>P</i> < 0.0001) on the evaluated reproduction parameters, i.e. days from calving to the first AI service (DAI), open days (OD), and the number of inseminations needed for conception (NAI). A significant effect (<i>P</i> < 0.0001) of OC on all reproduction parameters was also found. Mastitis and lameness occurring during lactation had significant effects on OD and NAI (<i>P</i> < 0.05 to <i>P</i> < 0.0001). The milk fever occurrence was related significantly only to a longer period to the 1<sup>st</sup> < AI (<i>P</i> < 0.01). In general, cows with health disorders are inseminated later and they conceived later after their previous calving compared to healthy cows, and need more inseminations for conception.

scholarly journals Management practices associated with conception rate and service rate of lactating Holstein cows in large, commercial dairy herds

2010 ◽  
Vol 93 (4) ◽  
pp. 1459-1467 ◽  
Author(s):  
J.M. Schefers ◽  
K.A. Weigel ◽  
C.L. Rawson ◽  
N.R. Zwald ◽  
N.B. Cook
Keyword(s):  
Management Practices ◽  
Conception Rate ◽  
Holstein Cows ◽  
Service Rate ◽  
Dairy Herds

9 Pregnancy loss in Holstein lactating recipient cows diagnosed pregnant by pregnancy-associated glycoprotein test in blood

2020 ◽  
Vol 32 (2) ◽  
pp. 129
Author(s):  
R. Santos ◽  
M. Oliveira ◽  
N. Melgar ◽  
R. Chebel ◽  
D. Demetrio
Keyword(s):  
Embryo Transfer ◽  
Pregnancy Loss ◽  
Binary Logistic Regression ◽  
Blastocyst Stage ◽  
Pregnancy Rates ◽  
Transrectal Ultrasonography ◽  
Holstein Cows ◽  
Dairy Herds ◽  
The Usa ◽  
First Time

The objective of this study was to evaluate the pregnancy loss (PL) between Day 30 (P30) and Day 80 (P80) of pregnancy in lactating Holstein recipients that received an invivo- (flush) or invitro-produced (IVF) embryo. The recipient cows were located at Maddox Dairy in Riverdale, CA, USA, a Holstein herd that milks 3500 cows with a 305-day mature-equivalent milk production of 12 800 kg. First-lactation cows were enrolled in a Presynch-Ovsynch oestrus-synchronization program and scheduled to be artificially bred for the first time at 80 days after calving or to receive an embryo 7 or 8 days after the expected heat (recipients). The data from 590 pregnancies (1045 embryo transfers) from embryos transferred between January 2018 and March 2019 was analysed. Only grade 1 embryos (from morula to hatched blastocyst stage) produced invivo or invitro from Holstein donor heifers, lactating or dry cows, were transferred fresh (invivo or invitro) or frozen-thawed (invivo), and pregnancy rates are shown in Table 1. The ruminant trophoblast produces pregnancy-associated glycoproteins (PAG) that can be detected by enzyme-linked immunoassay (ELISA) in the blood of pregnant cattle as early as 28 days after insemination. Various dairy herds in the USA have been using this test to supplement or replace the use of transrectal ultrasonography for early pregnancy diagnosis. Blood was sampled on P30 after expected heat day (23 days after embryo transfer) from the recipient cows and sent to IDEXX for the PAG Bovine Pregnancy Test, which was reconfirmed on P80 of pregnancy by transrectal ultrasonography. Pregnancy loss was considered to have occurred when a cow was pregnant on P30 but not pregnant on P80. The variable PL was analysed by binary logistic regression in the MINITAB program, and the model included effects of donor status (heifer vs. milk vs. dry) and embryo type. The total PL was 12.2% (72/590) and the details are shown in Table 1. No effect of donor status (P=0.80) was detected. However, there was effect of embryo type (P=0.004). The IVF embryos had a PL of 18.0% compared with 9.5% for the invivo-produced embryos. Further research should be performed to study heifer embryos PL, because currently more embryos are being produced from very young donor cows and sires due to intensive use of genomic testing. In conclusion, there is a higher PL in lactating dairy recipients receiving IVF fresh embryos compared with fresh or frozen invivo-produced embryos. Table 1.Embryo transfer (ET) pregnancy rates (PR, P30) in first-lactation Holstein cows (top) and pregnancy loss (PL) from Day 30 (P30) to 80 (P80) in first-lactation recipient Holstein cows (bottom) Item Heifer donor Lactating donor Dry donor Total ET P30 PR% ET P30 PR% ET P30 PR% ET P30 PR% Invivo - fresh 6 3 50.0 43 25 58.1 329 206 62.6 378 234 61.9 Invivo - frozen 75 38 50.7 221 129 58.4 296 167 56.4 IVF - fresh 123 61 49.6 91 42 46.2 157 86 54.8 371 189 50.9 Total 129 64 49.6 209 105 50.2 707 421 59.5 1045 590 56.5 P30 P80 PL% P30 P80 PL% P30 P80 PL% P30 P80 PL% Invivo - fresh 3 3 0.0 25 24 4.0 206 186 9.7 234 213 9.0 Invivo - frozen 38 35 7.9 129 115 10.9 167 150 10.2 IVF - fresh 61 48 21.3 42 35 16.7 86 72 16.3 189 155 18.0 Total 64 51 20.3 105 94 10.5 421 373 11.4 590 518 12.2

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