Influência do alimento na produção e qualidade do leite de cabra

Costa, Roberto Germano; Queiroga, Rita de Cássia Ramos do Egypto; Pereira, R.A.G.

doi:10.1590/s1516-35982009001300031

Cited by 50 publications

(51 citation statements)

References 57 publications

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“…According to these authors, this happened because the increase in the proportion of fiber stimulated the activities of chewing and rumination, stimulating a greater consumption of water. Costa, Queiroga, and Pereira (2009) reported that there was lower consumption of water by lactating goats that received rations with higher levels of fresh cactus -fodder instead of maize corn, without losses to milk production. The estimated water intake according to the NRC (2007) is 2.87 kg day -1 required to meet the requirements of lactating goats, as the average found in this work was 5.766 kg day -1 , resulting in higher values than those estimated (38; 19, 91 and 39%), for the diets SS, BH, SSFP and BHFP respectively.…”

Section: Resultsmentioning

confidence: 99%

Forage sources in diets for dairy goats

Ramos

Sousa

Oliveira

et al. 2019

Acta Sci. Anim. Sci.

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The objective of this study was to evaluate the use of sorghum silage, Buffel grass hay and forage palm fodder in the diet of dairy goats by means of performance tests and economic viability of different roughage sources. Eight Anglo-Nubian goats, multiparous, weighing around 40.13 ± 2.76 kg of live weight were used. The experiment lasted 84 days, consisting of four periods of 21 days, distributed in two Latin squares (4x4). The treatments represented by diets with different volumetric sources: SSCF: (sorghum silage+ forage palm+ concentrate); BHCF: (Buffel grass hay + cactus forage+ concentrate); SS: (sorghum silage+ concentrate) and BH: (Buffel grass hay + concentrate). Nutritional intake, digestibility, feed behavior, milk production and chemical composition and economic analysis were evaluated. Animals fed the BHCF diet had higher nutrient intakes and consequently were more productive in fat, protein, lactose, fat free solids and total solids. The BHCF diet led to a higher gross income in Brazilian currency. The safety margin of the SSCF diet presented the highest percentage, with 43.06%, and the BHCF diet, the lowest percentage, of 14.89. The association of forage palm with sorghum silage and Buffel grass hay can be used as a bulky source in lactating goat diets.

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Section: Resultsmentioning

confidence: 99%

Forage sources in diets for dairy goats

Ramos

Sousa

Oliveira

et al. 2019

Acta Sci. Anim. Sci.

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“…According to Costa et al (2009), when the animal advances in its lactation stage, there is a downward trend in the daily milk production and consequently the lactose content decreases, causing an increase in fat and protein levels.…”

Section: Resultsmentioning

confidence: 99%

Influence of lactation stage, delivery order of calving and genetic group on milk quality

Carmo¹,

Silva²,

Pereira³

et al. 2015

Afr. J. Agric. Res.

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Milk production and quality are influenced by environmental factors such as nutrition, genetic factors such as breed and physiological. The aim of the present study was to evaluate the influence of lactation stage, delivery order and genetic group on the quality of milk from crossbred cows 3/4 Gyr, 7/8 Gyr and 15/16 Gyr. Fresh milk samples were collected from crossbred cows. Fat, protein, lactose, non fat dry extract (NDE) and somatic cell count (SCC) of milk according to lactation stage, delivery order of calving and genetic groups were evaluated. The experimental design was completely randomized. Tukey test at 5% probability was used. Animals at the final third of lactation (201 to 305 days) showed higher fat, protein, NDE and SCC levels when compared to animals of other lactation stages. First delivery animals produced milk with higher content of solids compared to animals with 2 deliveries and above three deliveries. First calving the animals produced milk with higher solids content compared to animals with two calving and above three calving. Fat, protein and NDE results of fresh milk were consistent with limits established by the Brazilian legislation for milk quality, regardless of lactation stage, delivery order of calving and genetic group. Milk SCC was higher in cows in advanced lactation stage, The results were however below limits required by law. 3/4 crossbred Gyr cows showed higher SCC, with average values above limit established by current legislation.

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“…The source of energy is another factor that combined with the forage: concentrate ratio may affect milk composition, both in fat content and in milk fatty acid profile (Costa, Queiroga, & Pereira, 2009).…”

Section: Discussionmentioning

confidence: 99%

<b>Physical and chemical characteristics of milk from goats supplemented with different levels of total digestible nutrients in the dry period

Nascimento

Júnior

et al. 2017

Acta Sci. Anim. Sci.

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ABSTRACT. We evaluated the physical and chemical characteristics of raw milk from goats supplemented with levels of Total Digestible Nutrients (TDN) in the dry period. Samples from 20 goats were divided into 4 groups, 3 groups received 400g concentrate per animal with different levels of TDN (65, 75 and 85%), and the control group (without concentrate). Four samples of milk were used for each animal, in four sampling periods, which were subjected to physical and chemical analysis. There was no significant difference between the treatments for the parameters of acidity and fat. The diet without concentrate presented higher value for the cryoscopic index. Mean values of the four treatments were within the range set by the Brazilian legislation for all parameters evaluated. The use of concentrate, containing 85% TDN in goat supplementation, was favored the physical and chemical characteristics of the milk during the dry period.Keywords: concentrate, legislation, raw caprine milk.Características físico-químicas do leite de cabras suplementadas com diferentes teores de nutrientes digestíveis totais durante o período seco do ano RESUMO. Este trabalho teve por objetivo avaliar as características físico-químicas do leite de cabras suplementadas com teores de Nutrientes Digestíveis Totais (NDT) no período seco do ano. Foram utilizadas amostras de leite de 20 cabras as quais foram divididas em quatro grupos, sendo que três grupos receberam suplementação de 400 g de concentrado por animal com diferentes teores de NDT (65, 75 ou 85%) e o grupo controle que não recebeu concentrado. Foram utilizadas quatro amostras de leite para cada animal, em quatros períodos de coleta, as quais foram submetidas à análise físico-química de acidez titulável, crioscopia e gordura. Não houve diferença entre os tratamentos para os parâmetros de acidez e gordura. As amostras de leite dos animais que receberam a dieta sem concentrado apresentaram maior valor para o índice crioscópico. As médias das amostras dos quatro tratamentos estavam dentro dos parâmetros fixados pela legislação brasileira para todos os parâmetros avaliados. A utilização de concentrado contendo teor de 85% de NDT na suplementação de cabras favoreceu as características físico-químicas do leite durante o período seco.Palavras-chave: concentrado, legislação, leite cru caprino.

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Influência do alimento na produção e qualidade do leite de cabra

Cited by 50 publications

References 57 publications

Forage sources in diets for dairy goats

Forage sources in diets for dairy goats

Influence of lactation stage, delivery order of calving and genetic group on milk quality

<b>Physical and chemical characteristics of milk from goats supplemented with different levels of total digestible nutrients in the dry period

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