The effect of milk yield on some reproductive parameters of the Elsenburg Holstein and Jersey herds

Muller, Carel; Toit, F.J. Du; Singhapol, Chatchawan; Botha, J.A.

doi:10.4314/sajas.v30i4.3898

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…Maintenance and optimization of reproductive efficiency of a dairy herd is a continuous challenge to dairy farmers, especially when genetic improvement programmes are adopted to increase milk production (Muller et al, 2000;Lucy, 2001;Walsh et al, 2011). Although many of the reproductive problems in dairy cows result from diseases such as uterine infections (Bell & Roberts, 2007;Sheldon et al, 2008;Esalami et al, 2015) and occurrence of other postpartum reproductive problems, such as retained placenta, uterine prolapse, and postpartum uterine haemorrhage, the effect of metabolic stress, which is associated with high milk yield, on reproductive performance has received great interest among dairy practitioners and researchers (Collard et al, 2000;Fleischer et al, 2001;Raboisson et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Association between postpartum blood levels of glucose and urea and fertility of cross-bred dairy cows in Sudan

Sulieman¹,

Makawi²,

Ibrahim³

2017

SA J. An. Sci.

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This study aimed to find correlations between blood glucose and urea levels and the duration of postpartum period (PPP), number of services per conception (S/C), open period (OP), conception rate (CR) to first service, and the overall CR in 80 multiparous cross-bred dairy cows. The two metabolites were measured 1, 4, 7, 10, and 13 weeks postpartum. The CR to first service and overall CR were 13.8% and 42.8%, respectively. Based on S/C, three groups were identified: Group 1 (G-1) (n = 11) consisting of cows that conceived from first service; G-2 (n = 46) representing cows that needed two inseminations to conceive; and G-3 (n = 23) consisting of repeat breeders (RB). G-1 represented 13.8%, with PPP and OP shorter than cows in G-2 and in G-3, and had blood glucose levels 17.5% and 27.9% higher than levels in G-2 and in G-3, respectively. Until the 7th week postpartum, blood levels of urea were higher in G-1 and lower in G-3. However, in the 10th and 13th weeks postpartum, results were reversed. The PPP, S/C, and OP were negatively correlated with blood glucose over the study period and with blood urea at the first seven weeks postpartum. However, these traits were positively correlated with blood urea measured at 10 and 13 weeks postpartum. It can be concluded that, from this study, maintaining high blood glucose until the 13th week postpartum, high blood urea during the first 7 weeks postpartum, and low blood urea during the 10th and 13th weeks postpartum were associated with good fertility in dairy cows. ______________________________________________________________________________________

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Section: Discussionmentioning

confidence: 99%

Association between postpartum blood levels of glucose and urea and fertility of cross-bred dairy cows in Sudan

Sulieman¹,

Makawi²,

Ibrahim³

2017

SA J. An. Sci.

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“…The decline in fertility in modern dairy cows is major concern, because the profitability of dairy herds greatly depends on fertility which has been often linked to a rising milk yield in high producing dairy cattle (L ucy, 2001). A decline in dairy cow fertility has been observed in European countries ( (Macmillan et al, 1996), South Africa (Muller et al, 2000) and the United States (L ucy, 2001). Surveys over the last 5-10 years showed that the decline in conception rate was around 0.5 % and 1 % per year (Butler and Smith, 1989;Royal et al, 2000;Chevallier and Humblot, 1998;Boichard et al, 2002a;Freret and Chevallier, 2002).…”

Section: Introductionmentioning

confidence: 99%

The effect of calving season on reproductive performance of Jersey cows

Soydan

Kuran

2017

Mljekarstvo

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Dairy records, containing 1269 lactation record of 462 Jersey dairy cows collected over 16 years, from an agricultural state farm were used. Data for reproductive performance of cows were also collected. Means of the herd for lactation milk yield, calving interval, days open, interval from calving to the first insemination, lactation length, gestation length and dry period were 3195.7±20.2 kg, 366.6±1.7 d, 92.9±1.6 d, 78.0±1.3 d, 301.7±1.1 d, 275.2±0.2 d and 69.3±0.8 d, respectively. The effect of calving season (winter, spring, summer and autumn) on reproductive performance for high, low and moderate milk-yield cows was investigated. Calving season affected the days from calving to first insemination in high and moderate yielding cows (P<0.001) while didn't affect low yielding cows. In summer, days open in high yielding cows were 35 days longer compared to winter season (P<0.001) as observed for moderate yielding cows (P<0.01). In high yielding cows, calving interval was 18 days longer in spring compared to winter calving season. Calving season also affected the first service conception rate in high yielding cows (P<0.05). Services per conception in autumn were lower than the other seasons (P<0.001). In conclusion, high yielding dairy cows need more attention in summer season with respect to body condition score, dietary energy: protein ratio, uterus health and elimination of heat stress, to get more profit in dairy farm.

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Impact Of Genotypes And Parity On Reproductive And Productive Attributes In Dairy Cattle Of Natore District, Bangladesh

Islam

Kundu

1970

J Life Earth Sci

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Impact of genotypes and parity on some vital reproductive and productive attributes in the local (L×L, n = 100) and four crossbred cows (L×F, L×SL, L×JR and L×S; n = 318) raised in randomly selected smallholder dairy farms scattered all over Natore District and adjacent areas have been assessed during a period from September 2007 to June 2010. With regard to reproductive attributes, significant differences existed among the cattle genotypes (P<0.05) except for gestation length (GL) and age at weaning (AW). The lowest age at puberty (AP) was found for L×F (21.42±0.37 months), while the highest for L×L (31.67±0.74 months). In terms of productivity, L×F cows produced the highest daily milk yield (DMY; 6.22±0.13 L), coupled with the highest total lactation yield (TLY; 2163.43±47.77 L), while L×L produced the lowest values (1.49±0.04 L and 416.40±12.3 L, respectively) for the traits. The effect of parity on both reproductive and productive attributes showed that the middle-aged dairy cows of the 3 rd and 4 th parities performed better than the younger (1 st and 2 nd parities) or the older (5 th and beyond) ones. Considering the overall performance, the L×F cows could be ranked as the best genotype followed by their L×SL, L×JR, L×S and L×L counterparts in the study area.Key words: Genotypes, parity, reproductive and productive attributes, dairy cattle, Natore. mvivsk: ‡m ‡Þ¤î 2007 n ‡Z Ry b 2010 ch© š-bv ‡Uvi †Rjv Ges ZrmsjMoe AÂj mg ‡n ˆ`ePqb c×wZ ‡Z wbe© vwPZ wKQy msL¨K †QvU cwigv ‡ci †Mvkvjvi ¯' vbxq Rv ‡Zi (L×L) 100wU Ges Pvi ai ‡bi msKi Rv ‡Zi (L×F, L×SL, L×JR and L×S) 318wU Mvfxi wR ‡bvUvBc Ges c¨vwiwUi Dci wKQy msL¨K ¸i"Z¡ cỸ© cÖ RbbMZ I Drcv`bMZ ˆewkó¨vejxi cÖ fve gj¨vqb Kiv nq| Mvfx¸ ‡jvi Mf© Kvjxb mgq Ges `y a Qvovi mgq e¨ZxZ Ab¨vb¨ cÖ RbbMZ ˆewk ‡ó¨i g ‡a¨ ¸i"Z¡ cỸ© cv_© K¨ (P<0.05) cwijw ¶Z nq| L×F Rv ‡Z ¯íZg eqtmwÜKvj wQj 21.42±0.37 gvm, A_P L×L Rv ‡Z m ‡e© v"P eqtmwÜKvj wQj 31.67±0.74 gvm| Drcv`bMZ ˆewk ‡ó¨i w`K w` ‡q L×F RvZ wQj me© vwaK ˆ`wbK `y » Drcv`b ¶g (6.22±0.13 wjUvi) Ges me© vwaK ‡gvU `y » Drcv`bKvjxb mg ‡qi Drcv`b (2163.43±47.77 wjUvi), A_P GB ˆewkó¨¸wj L×L Rv ‡Z wQj me© wbgoe , h_vµ ‡g 1.49±0.04 Ges 416.40±12.3 wjUvi| cÖ RbbMZ I Drcv`bMZ ˆewk ‡ó¨i Dci c¨vwiwUi cÖ fve Zi"Y (cÖ _g I wØZxq c¨vwiwU) A_ev e" × (cÂg I Z ‡`va© ) eqmx A ‡c ¶v ga¨eqmx Z… Zxq I PZz _© c¨vwiwU ‡Z fvj ‡`Lv wM ‡qwQj| Gme we ‡ePbv K ‡i M ‡elYv AÂ ‡ji Mvfx¸wji g ‡a¨ ` ¶Zvi µggv ‡b L×F Rv ‡Zi Mvfx wQj L×SL, L×JR, L×S I L×L Rv ‡Zi Mvfx A ‡c ¶v m ‡e© vËg †KŠwjZvwË¡ K ˆewkó¨ m¤úboe |

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The effect of milk yield on some reproductive parameters of the Elsenburg Holstein and Jersey herds

Cited by 4 publications

References 5 publications

Association between postpartum blood levels of glucose and urea and fertility of cross-bred dairy cows in Sudan

Association between postpartum blood levels of glucose and urea and fertility of cross-bred dairy cows in Sudan

The effect of calving season on reproductive performance of Jersey cows

Impact Of Genotypes And Parity On Reproductive And Productive Attributes In Dairy Cattle Of Natore District, Bangladesh

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