Comparative evaluation of non-genetic factors affecting milk yield and composition of Red Dane and Jersey cattle in Zimbabwe

Nyamushamba, G. B.; Halimani, T. E.; Imbayarwo-Chikosi, V. E.; Tavirimirwa, B.

doi:10.1186/2193-1801-3-88

Cited by 15 publications

(19 citation statements)

References 8 publications

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“…On perusal of Table 2, it is evident that animals in third and fourth parities produced comparatively more total milk per day of lactation length and total milk per day of calving interval as compared to animals of earlier and later parities. This suggests that milk yield increases as parity proceeds because due to large body size and increased development of udder tissue large cows produce more milk than cows of earlier parities/heifer (Nyamushamba et al, 2014). The milk yield was also lower in early parities because the energy derived from feed that was provided to the heifers was also channeled to their growth.…”

Section: Resultsmentioning

confidence: 99%

Genetic analysis of milk production efficiency traits in Jersey crossbred cattle

Ratwan¹,

Mandal²,

Kumar³

et al. 2015

IJAR

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Present study was carried out with the aim to determine the effect of genetic and non-genetic factors on milk production efficiency traits and their genetic control. Data on milk production efficiency traits i.e. total milk yield per day of lactation length and total milk yield per day of calving interval in Jersey crossbred animals maintained at organized herd of ICARNational Dairy Research Institute, Eastern Regional Station, Kalyani, Nadia, West Bengal spread over 29 years were analyzed in the study. The overall least-squares means of total milk yield per day of lactation length and total milk yield per day of calving interval were estimated as 6.97±0.21 and 6.02±0.23 kg/day, respectively. The data was grouped into different sub-classes of season of calving, period of calving, parity and genetic group of animals. The random effect of sire had shown significant (p<0.01) influence on milk production efficiency traits. Various environment factors significantly affected the milk production efficiency traits indicating the scope of improvement in management of these crossbred animals. The heritability estimates of 0.54 for TMY/LL and 0.63 for TMY/CI were high in magnitude which suggests that fast genetic progress can be made, if these animals are selected based on the milk production efficiency traits.

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Section: Resultsmentioning

confidence: 99%

Genetic analysis of milk production efficiency traits in Jersey crossbred cattle

Ratwan¹,

Mandal²,

Kumar³

et al. 2015

IJAR

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“…Higher milk fat and protein contents in primiparous cows were connected with the lower milk yield; when the limiting milk yield associated with the growth of mammary gland and promotes a higher fat and protein contents in milk [21].…”

Section: Discussionmentioning

confidence: 98%

“…The lactation order is associated with the age of the cows. When the primiparous cows use nutrients from TMR for full development of tissues of the mammary gland and body frame, the milk synthesis is limited [21].…”

Section: Discussionmentioning

confidence: 99%

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Effect of Parity and Days in Milk on Milk Urea Concentration and Milk Components in Holstein Dairy Cows

2022

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The objective of this study was to assess the effects of parity and of days in milk (DIM) on milk urea (MU) and other milk components in Holstein dairy cows. Milk yield was lower (P < 0.05) in primiparous cows compared with multiparous cows and tended to increase until the third parity and then decrease. The MU concentration was lower (P < 0.05) at the first lactation than at the other lactations. Milk fat and protein contents were higher (P < 0.05) in the primiparous cows than that in multiparous cows and were reduced until the third parity and then increased. Lower (P < 0.05) milk lactose content was found in primiparous cows and tended to increase until the third parity and then decreased. Primiparous cows had lower (P < 0.05) daily protein and fat yields compared with multiparous cows. The lowest value of milk yield was recorded during the first lactation with a peak of lactation between 61—90 DIM and a persistence of lactation of 3 %. The highest milk yield was confirmed at the third and fourth lactations with a peak of lactation between 61—90 DIM and a persistence of lactation of 7 % and 6 %. The effect of DIM on MU confirmed a significant (P < 0.01) positive relationships in primiparous and multiparous cows. The lowest level of MU concentration was found between 0—30 DIM. The content of MU increased and the maximum was achieved between 271—305 DIM. It is suggested that although MU for nutritional management and measures of production or reproduction are used, non-nutritional factors should be considered.

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“…Parity and season had no effect on cholesterol, magnesium and phosphorus. A study by Nyamushamba et al, (2014) [10], indicated that parity, year of calving, days in milk and age of calving affect yield and composition of milk of Red Dane cows in Zimbabwe. It was reported by Sutthisak et al, (2014) [11], that milk protein and SNF were found to be higher during rainy season than in the summer and winter seasons.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of milk quality from dairy cows fed maize (Zea mays) stover treated with chopped and mineralized groundnut (Arachis hypogea) and soybean (Glycine max) stover

Chisowa¹,

Mpofu²,

MT³

et al. 2022

World J. Adv. Res. Rev.

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This study evaluated the effect of upgrading the quality of maize stover (MS) on milk nutritive value. The study involved feeding MS improved using urea (U), chopped groundnut stover (cGS), chopped soybean stover (cSS), mineralized groundnut stover solution (mGS) and mineralized soybean stover solution (mSS) to lactating dairy cows. The feeding trial involved twelve (12) dairy cows in their second parity. Effect of supplementation with MS improved with U, cGS, cSS, mGS and mSS on milk quality was evaluated following on-station feeding trials. The study involved 22 factorial experiments within a Completely Randomised Design (CRD). Milk samples were analysed for protein, lactose, fat and solid not fat (SNF). Mean milk protein levels ranged from 3.52mg/ml to 3,73mg/ml (s.e=0.03) for milk from cows fed on MS improved using cGS and mGS respectively. Protein and Lactose were observed to be the least variable (3.64g/ml ±0.12, and 5.24g ±0.24 respectively). Average milk fat content was highest (4.78%, se=0.52) in milk from cows fed on UET treated MS and lowest (3.43%, se=0.52) in milk from cows fed on gGS protein based MS. Within legume type milk fat was higher(4.75%±1.99) in milk from cows fed on MS blended with mGS than that in milk from cows fed on MS improved with cGS (3.43%±1.99). Similar result was observed in milk fat from cows fed on MS improved with the use of soybean. Lactose in milk from cows fed on UET treated MS was highest (5.51g, se=0.061) and lowest (5.10g, se=0.061) in milk from cows fed on MS blended with cGS. Milk from cows fed on MS improved with mGS was higher (9.61p/cwt, se=0.14) in SNF and lowest (8.88p/cwt, se=0.14) in milk from cows fed on MS with cGS. The milk density values ranged from 32.65sg, se=0.53 for milk from cows fed on UET treated MS to 30.42sg, se=0.053 for milk from cows fed on MS blended with cGS. Milk components were higher when cows were fed on MS improved using mineralized legume stover solutions.

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Comparative evaluation of non-genetic factors affecting milk yield and composition of Red Dane and Jersey cattle in Zimbabwe

Cited by 15 publications

References 8 publications

Genetic analysis of milk production efficiency traits in Jersey crossbred cattle

Genetic analysis of milk production efficiency traits in Jersey crossbred cattle

Effect of Parity and Days in Milk on Milk Urea Concentration and Milk Components in Holstein Dairy Cows

Evaluation of milk quality from dairy cows fed maize (Zea mays) stover treated with chopped and mineralized groundnut (Arachis hypogea) and soybean (Glycine max) stover

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