The composition of Alpine goats' milk during lactation in Greece

Voutsinas, L.P.; Pappas, Christophoros P.; Katsiari, M.C

doi:10.1017/s0022029900026595

Cited by 57 publications

(40 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Nevertheless, Fernández (2000) and Večeřová and Křížek (1993b) did not find the li�er size as a source of milk production variation. In agreement with Milerski and Mareš (2001) the highest protein contents were observed in goats with single li�ers and lower fat contents in does with three and more kids.In concordance with other authors (Voutsinas et al, 1990;Haenlein, 1996;Zeng et al, 1997), the effect of lactation stage (lst) was observed as a source of variation for the three traits in both models (2 and 3). Figure 1 shows the average lactation curves of MY, FP and PP and their respective 3rd degree polynomial trend lines.…”

supporting

confidence: 91%

See 1 more Smart Citation

Factors affecting goat milk yield and its composition

Ciappesoni¹,

JPřibyl²,

Milerski³

et al. 2004

CZECH J ANIM SCI

View full text Add to dashboard Cite

ABSTRACT:The aim of the paper was to prove the accuracy of various statistical models of variance analysis for estimation of systematic factors that influence milk yield and fat and protein content in dairy goats. Data on daily milk production recorded by methods AT, AC or A4 for the population of Czech White Shorthaired Goats over 1992-2002 was used for calculations. A total of 78 736 test day from 6 234 goats were analysed. Average daily milk production was 3.09 kg with 3.72% of fat and 2.84% of protein. Variability of examined traits was significantly influenced by effects of herd-year or herd-test day, li�er size, parity, season of kidding, stage of lactation and the combined effect parity-year-season of kidding. The variants of model equations in which complex effects of herd-year were replaced by effects of herd-test day showed higher values of reliability for the three traits analysed.Keywords: Czech White Shorthaired Goat; fat; protein; lactation curve; test day 466Original Paper Czech J. Anim. Sci., 49, 2004 (11): 465-473 day Animal Model for BVE in dairy goats. Milerski et al. (1999) found considerable differences in the evaluation of individual animals between the system of evaluation of dairy goats presently used in the Czech Republic and BVE done by BLUP Animal Model. MATERIAL AND METHODSData from the official milk recording of the Czech White Shorthaired breed of goats provided by the Sheep and Goat Breeders Association (SCHOK) was used as the basic material for our calculations. The analysed data were recorded in the period from 1992 to 2002. Daily milk production was recorded by methods AT, AC or A4 (ICAR, 2001). Although the analysed data were recorded in production operations, several fixed effects were included in the model. The most marked effects will be chosen using the ordinary Least Squares Method and the procedure GLM (SAS, 1996).Several checks of performance records were carried out in order to exclude logical inconsistencies and biological improbabilities: (a) Age at first kidding had to be at least 275 days. (b) Difference between lactation number and period (in years) from birth to the 31/12/n (n = production year): 0.5-2 years. (c) Test-day records included for year n had to be between the dates 1st October n-1 and the 31st March n+1. (d) Kidding date had to be between the dates 1st October n-1 and the 30th September n. Other used criteria are shown in Table 1. Poor quality data were excluded from the followings computations. The original performance record database included 87 736 test-day records. The number of data considerably diminished a�er the introduction of the above-mentioned criteria, a total of 78 736 records of daily milk production, 77 536 records of fat percentage and 78 269 records of protein percentage in milk from 6 234 goats were finally analysed.The effects of herd, test day, number and stage of lactation, production year, kidding season and li�er size were tested using the followings five models: e ĳklm = random residual RESULTS AND DISCUSSIONMeans and standa...

show abstract

supporting

confidence: 91%

“…In concordance with other authors (Voutsinas et al, 1990;Haenlein, 1996;Zeng et al, 1997), the effect of lactation stage (lst) was observed as a source of variation for the three traits in both models (2 and 3). Figure 1 shows the average lactation curves of MY, FP and PP and their respective 3rd degree polynomial trend lines.…”

supporting

confidence: 91%

Factors affecting goat milk yield and its composition

Ciappesoni¹,

JPřibyl²,

Milerski³

et al. 2004

CZECH J ANIM SCI

View full text Add to dashboard Cite

show abstract

“…However, thereafter the opposite trend was found and its highest value was recorded at the end of lactation. On the other hand, Voutsinas et al (1988) and Sahan et al (2005) reported that the SG of sheep milk decreased during the first six or seven weeks of lactation. However, thereafter its values remained relatively stable until the end of lactation.…”

Section: Resultsmentioning

confidence: 96%

Effect of the stage of lactation on milk composition, its properties and the quality of rennet curdling in East Friesian ewes

Kuchtík¹,

Šustová²,

Urban³

et al. 2008

Czech J. Anim. Sci.

View full text Add to dashboard Cite

The composition of sheep milk and its production per lactation are influenced by a large number of factors; however, the most important factors are breed, nutrition, health of the animals, environment and the number and stage of lactation. The effect of the stage of lactation on milk composition in different sheep breeds was studied by Jelínek et al. (1990), Maria and Gabina (1993) ABSTRACT:The evaluation of the effect of the stage of lactation on milk composition, its properties and the quality of rennet curdling was carried out over the period of three successive years using milk samples (n = 162) obtained from a total of 27 ewes of the East Friesian (EF) breed, reared on a small sheep farm in Juřinka in the region of Wallachia. The stage of lactation had a highly significant effect on the contents of all milk components. However, only the contents of total solids (TS), solids non-fat (SNF), fat (F), protein (P) and casein (CN) gradually increased with the advancement of lactation. The stage of lactation also had a highly significant effect both on all the properties of milk and the rennet curdling quality (RCQ). All phenotypic correlations between the particular contents of TS, SNF, F, P, CN and urea nitrogen (UN) were positive and high (P ≤ 0.001). On the other hand, all phenotypic correlations between milk yield and particular contents of TS, SNF, F, P, CN and UN were negative and high (P ≤ 0.001). The majority of phenotypic correlations between rennet clotting time (RCT) and the other particular parameters was insignificant. However, the phenotypic correlations between lactose (L) and RCT and between pH and RCT were positive and high (P ≤ 0.001) whereas the phenotypic correlation between titratable acidity (TA) and RCT was negative and high (P ≤ 0.001). The majority of phenotypic correlations between the rennet curdling quality (RCQ) and the other particular parameters was insignificant. Nevertheless, the phenotypic correlations between pH and RCQ and between RCT and RCQ were positive and high (P ≤ 0.001) whereas the phenotypic correlation between TA and RCQ was negative and high (P ≤ 0.001).

show abstract

“…Os dados da literatura são controversos quanto ao percentual de proteína em relação ao período de lactação. Alguns autores afirmam que o conteúdo de proteína decresce no decorrer da lactação (Faria, 1987;Voutsinas et al, 1990), enquanto outros afirmam o contrário (Veinoglou et al, 1982). Faria (1987) observou que os teores de proteína tenderam a diminuir até aproximadamente 120 dias de lactação, no entanto, não verificou variações significativas nos seus valores com aumento do aporte de proteína (50%), ministrado sob a forma de concentrado protéico.…”

Section: Resultsunclassified

Influência do manejo do rebanho, das condições higiênicas da ordenha e da fase de lactação na composição química do leite de cabras Saanen

Queiroga

Costa

Biscontini³

et al. 2007

R. Bras. Zootec.

View full text Add to dashboard Cite

RESUMO -Objetivou-se avaliar a influência dos períodos de lactação nas características químicas e físicas do leite de cabras Saanen no Brejo Paraibano, Brasil, e verificar o efeito do manejo do rebanho, da higiene da ordenha e dos períodos da lactação no perfil lipídico do leite. Vinte animais foram selecionados, constituindo-se quatro grupos de 5 (com e sem a presença do macho e ordenha com e sem procedimentos de higiene) para análises de amostras de leite coletadas com 35, 85 e 135 dias de lactação. Os resultados comprovaram produtividade leiteira satisfatória em 135 dias de lactação, evidenciando produção máxima aos 35 dias e comportamento linear decrescente com o avanço da lactação. Os teores de lipídios e acidez variaram no decorrer da lactação. A higiene da ordenha e o manejo do rebanho não tiveram efeito sobre o perfil de ácidos graxos, no entanto, os valores médios de ácidos graxos saturados foram influenciados pela fase de lactação, observando-se os maiores percentuais de ácidos graxos de cadeia curta aos 85 dias da lactação. Os teores médios de ácidos graxos insaturados também foram modificados por este fator e apresentaram os maiores valores aos 35 dias de lactação.Palavras-chave: ácidos graxos, caprinos leiteiros, constituintes do leite Effects of flock management, milking sanitary conditions and lactation stage on milk composition of Saanen goatsABSTRACT -The objective of this trial was to evaluate the effect of lactation stage in the chemical and physical characteristics of milk from Saanen goats as well as to investigate the effects of flock management, milking sanitary conditions, and lactation phase in the milk fatty acid profile. Twenty goats were randomly assigned to four groups of five animals each. Flock management differed by the presence or absence of males in the groups while milking sanitary conditions differed either by a poor or by a good milking hygiene. Milk samples were collected at 35, 85 and 135 days of lactation. Results showed that milk yield was as expected at 135 days of lactation; peak milk production was observed at 35 days of lactation and decreased linearly as lactation progressed. Milk yield, milk fat content, and milk acidity all changed according to the lactation stage. Milking sanitary conditions and flock management did not affect the milk fatty acids profile. However, milk fatty acids profile differed at different lactation stages with the greatest content of saturated fatty acids at 85 days of lactation.

show abstract

The composition of Alpine goats' milk during lactation in Greece

Cited by 57 publications

References 21 publications

Factors affecting goat milk yield and its composition

Factors affecting goat milk yield and its composition

Effect of the stage of lactation on milk composition, its properties and the quality of rennet curdling in East Friesian ewes

Influência do manejo do rebanho, das condições higiênicas da ordenha e da fase de lactação na composição química do leite de cabras Saanen

Contact Info

Product

Resources

About